my unvetted nodes got 2.7GB ingress yesterday (both combined since same subnet). My vetted node got 12GB. So currently that’s 22.5% of the ingress of a vetted node. So it’s still a long way from a vetted node actually only receiving 5% of a vetted node. So this system is actually faster for unvetted nodes.
However, it also depends on generall infress:
I have 2 unvetted nodes on the same subnet so vetting will take them longer. They are both 1 month old now and vetting is done 11% (europe-north) up to 54% (on saltlake).